New Advent Encyclopedia, online
The New Advent Encyclopedia is the first result for a Catholic encyclopedia on all search engines. It was published in 1917 and, while it can have very good information, it is missing a century of events and their interpretation. In general, we recommend treating its articles as historical documents. The encyclopedia gives the reader a sense of how early 20th century theologians reflected on particular topics.
Please click on the Practicing Materials page to further your research into systematic theology beyond dictionary and encyclopedia articles, and into books that present the sweep of the field.